Ball Bearing, Angular Contact HY S 61903 C TA

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HY S 61903 C TAHY S 61903 C TA
Part NumberHY S 61903 C TA
Bearing Size61903

Bearing Dimensions

Bore Diameterd [mm]17
Outer DiameterD [mm]30
Single Bearing WidthB [mm]7
Pitch Circle Diameterdm [mm]23.5
Ball DiameterDw [mm]3.97
OD Inner Ringd1 [mm]21.0
ID Outer RingD1 [mm]26.6
ID Outer Ring - Open SideD2 [mm]27.7
Chamferr1,2 [mm]0.3
Chamfer - Open Sider3,4 [mm]0.3

Bearing Load Ratings

Dynamic Radial Load RatingC [N]4700
Static Radial Load Rating - Steel BallsC0 [N]2700
Static Radial Load Rating - Si3N4 BallsC0 HY [N]1900

Bearing RPM Ratings

Speed Value - Oil Lubricationnoil [1/min]88750
Speed Value - Grease Lubricationngrease [1/min]66250
Bearing SeriesS
Hybrid (Si3N4 Balls)Yes

Geometrical Data

Number of BallsZ [Qty]14
Contact Angleα0 [°]15
Bearing Weightm [kg]0.017

Mating Part Dimensions

Abutment Diameter Inner Ringda,b min [mm]19.5
Abutment Diameter Outer RingDa,b max [mm]27.5
Chamfer Associated Componentra max [mm]0.3
Chamfer Associated Component - Open Siderb max [mm]0.10

Bearing Preload Data

Light Pre-LoadFv [N]25
Light Axial RigidityCax [N/µm]20
Medium Pre-LoadFv [N]75
Medium Axial RigidityCax [N/µm]32
Heavy Pre-LoadFv [N]150
Heavy Axial RigidityCax [N/µm]45
Minimum Spring Pre-LoadFf [N]120


  1. Position of the oiling Nozzle (dT) for bearings with TA cage/ TXM cage upon request
  2. The stated load and speed values are given for a spring preloaded single bearing with oil/air or oil mist lubrication. If specific applications differ, please consult correction factors and/or GMN USA engineers.

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